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PRF (pulse repetition frequency) selection method and system for dual-beam SAR based on optimal azimuth ambiguity

An azimuth fuzzy, optimal azimuth technology, applied in radio wave measurement system, radio wave reflection/re-radiation, utilization of re-radiation, etc., can solve the difficulty of determining the optimal value of pulse repetition frequency, the key parameter of the system, design time and design High cost and other problems, to achieve the effect of accurate selection of optimal orientation ambiguity, accurate determination of correctness, and improvement of precision

Inactive Publication Date: 2018-05-01
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

[0003] The main technical problems of the azimuth dual-beam SAR system are: in the system design of the azimuth dual-beam SAR, it is difficult to determine the optimal value of the system key parameter pulse repetition frequency (PRF), which requires multiple iterations for design, and the design time and higher design cost

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  • PRF (pulse repetition frequency) selection method and system for dual-beam SAR based on optimal azimuth ambiguity
  • PRF (pulse repetition frequency) selection method and system for dual-beam SAR based on optimal azimuth ambiguity
  • PRF (pulse repetition frequency) selection method and system for dual-beam SAR based on optimal azimuth ambiguity

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[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] The invention discloses a PRF selection method and system for dual-beam SAR based on optimal azimuth ambiguity, which can obtain a suitable azimuth dual-beam synthetic aperture radar (SAR) azimuth ambiguity calculation method through theoretical derivation and simulation analysis; through calculation According to the azimuth ambiguity of the system at different pulse repetition frequencies (PRF), the optimal parameters of the system PRF are obtained according to the selection principle of the optimal azimuth ambiguity; the feasibility and correctness of this method are verified by simulation experiments. This method can effectively obtain the optimal result of the key parameter PRF in the design of the azimuth dual-beam SAR system, and is a key step in completing the design of the azimuth dual-beam SAR system. The optimal orien...

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Abstract

The invention discloses a PRF (pulse repetition frequency) selection method and system for a dual-beam SAR based on optimal azimuth ambiguity. A proper azimuth ambiguity calculation method for the azimuth dual-beam SAR can be obtained through theoretical deduction and simulation analysis. The method comprises the steps: obtaining PRF optimal parameters of a system according to the optimal azimuthambiguity selection rule through calculating the azimuth ambiguity of the system at different PRFs. The feasibility and accuracy of the method are verified through a simulation test. The method can effectively obtain an optimal result of the key parameters PRFs in the design of the azimuth dual-beam SAR system, which is the key step of completing the design of the azimuth dual-beam SAR system. Themethod can effectively obtain the PRF optimal parameters of the system based on the optimal azimuth ambiguity through calculating the azimuth ambiguity of the azimuth dual-beam SAR system.

Description

technical field [0001] The invention relates to a PRF selection method and system for dual-beam SAR based on optimal azimuth ambiguity, and belongs to the technical field of microwave remote sensing imaging. Background technique [0002] The azimuth dual-beam synthetic aperture radar (SAR) can revisit the target multiple times, and has application modes such as multi-angle observation and moving target detection. It is one of the development directions of the future SAR system. [0003] The main technical problems of the azimuth dual-beam SAR system are: in the system design of the azimuth dual-beam SAR, it is difficult to determine the optimal value of the system key parameter pulse repetition frequency (PRF), which requires multiple iterations for design, and the design time and The design cost is higher. Contents of the invention [0004] The technical problem solved by the present invention is: in view of this, to overcome the deficiencies of the prior art, to provide...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/90G01S7/28
CPCG01S7/28G01S13/9011G01S13/904G01S13/9041
Inventor 郭磊党红杏刘昕王万林杨东闫伟
Owner XIAN INSTITUE OF SPACE RADIO TECH
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